[ecasound] ecasound and midi-events

Hi!
At the moment I have a problem, I want to start a midi-sequencer parallel
with ecasound, my ecasound-commandline was this:
ecasound -c -Md:alsaseq,16:0 -Mms:1 -a:1 -i jack -o test.wav
in ecasound I did:
engine-launch
start
But my midi-sequencer didn't start. Port 16:0 is a virmidi card also
connected to the sequencer.
Is this my problem, ecasound's or the sequencer's?
Can anyone help me?
Kindest regards
Julien